Warped Rotors: Anyone Else? - K-Bikes.com - Excellence in Motion
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post #1 of 19 (permalink) Old Oct 9th, 2006, 8:34 am Thread Starter
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Location: Asheville, NC, USA
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Question Warped Rotors: Anyone Else?

I noticed just before the Deals Gap rally that I had started to feel a distinct pulsing when I applied the front brakes.. It's very noticeable when I pull in the clutch and THEN pull hard on the front brake. I do NOT remember the pulsing when the bike was new. I think this is the first sign of warped front rotors.. either one or both. it's NOT horrible and the bike does stop fine, but .. it's there for all to feel..and I think it's getting worse..

I called BMWNA and told them about it (just to make sure my complaint is on record) and they told me "if you have a problem.. Just bring it to a dealer and we'll fix it..We want you to be safe.." That immediate response, instead of excuses like.. it's normal, or it's all in your head, or George Bush causes this, would lead me to believe that this may be common..

I know many of the "R" bikes got new rotors recently during the recall... but I had NOT heard of any "S" bikes..

Has anyone else experienced this? What say ye, my brethren?

Jerry D. Finley ("Danger" is my middle name)
"I speed, therefore I am. "

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post #2 of 19 (permalink) Old Oct 9th, 2006, 10:31 am
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I have not with 13k miles on my 06. How many miles do you have on yours?
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post #3 of 19 (permalink) Old Oct 9th, 2006, 10:46 am
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I am starting to feel the same thing, and it was not there when the bike was new. 06 K1200R. Can you give me the number you call to file the complaint? Also a contact name if you have one.


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post #4 of 19 (permalink) Old Oct 9th, 2006, 11:04 am Thread Starter
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BMWNA is 800.831.1117 I usually speak with Tony or Robert... Very nice guys..

FYI.. I have under 3800 miles on mine..

Jerry D. Finley ("Danger" is my middle name)
"I speed, therefore I am. "

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post #5 of 19 (permalink) Old Oct 9th, 2006, 1:16 pm
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I had this same problem...brought the bike to two different dealers and both say they can't find the problem. I am still not satisfied. I noticed the problem at about 6500 miles. I now have 7800 miles on the bike. I will call BMWNA and see what they say.
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post #6 of 19 (permalink) Old Oct 9th, 2006, 7:53 pm
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Jerry -

Mine's an '05 with 13K miles. Same problem. Haven't brought it in yet.

Ya know, you don't get this crap with a "cheap" Japanese literbike.
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post #7 of 19 (permalink) Old Oct 10th, 2006, 2:56 pm
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Location: Belvidere, NJ, USA
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I had the same problem with my 03 KRS.
Took it to my dealer several times.
The rotors weren't warped.
They were mic'd and fell well under spec.
The real problem was that I'd bought the bike 2nd hand.
The previous owner didn't bother to break in the brakes properly.
What was happening was that the pads were depositing a micro thin layer
of material in various spots on the rotors.
This resulted in a slight shudder upon braking that, for all intents and purposes,
felt liked a warped rotor.
For all you with "warped rotors", try this.
Scrub the rotors with Simple Green and a Scotch Brite pad.
Then go out and ride.
I'll bet the shuddering goes away for a while, at least til the pad material is
deposited again.
Only cure is to replace both rotors and pads together, and follow proper break in procedures.
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post #8 of 19 (permalink) Old Oct 10th, 2006, 7:57 pm
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Brake Pulsing

Jerry, I had the same problem with my S. It started at about 8,000 miles. The dealer found a small nick in the leading edge of one brake disc and replaced it. Was not covered under warrenty ( road hazzard ). The disc they put on was not the right disc for the bike. It had a groove on the leading edge and was painted black. Obvious, huh? The pulsing stopped for a few hundred miles until the pads got beded and started again. They replaced the disc ,this time under warrenty. Problem returned. Replaced both discs and new pads under warrenty. Have since gone about 3,500 miles. Seems to be OK, but have been fooling around with this since the first of November last year. I have 27,500 miles on the bike now. It's also had two clutches and a shifter drum replaced. They neglected to soak the first clutch in oil before installation. Woops.It still doesn't shift right into second and third. I suspect the shifter forks are worn. I don't know why they didn't just replace the entire transmission the first time. Both clutches had to be ordered from Germany. That's service for you.Also computer would not indicate what gear you were in or show neutral after new shifter drum was installed. Had to order a new potentiometer with a different plug to get it to work. I kept the "road hazzard" disc and checked it with a micrometer and found no variation. I returned it and they are deciding to credit me the cost or not. I'll call them tomorrow. Oh well. Just venting. Good luck. I hope you get your problem resolved in less than one year and 20,000 miles like mine.
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post #9 of 19 (permalink) Old Oct 10th, 2006, 9:57 pm
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Warped Rotors

I have the shuddering problem but don't feel it in the brake lever. I will have to try the scotch brite / Simple Green fix and see what happens.

2009 K1300S Lava Orange
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post #10 of 19 (permalink) Old Oct 11th, 2006, 8:40 am
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My KS now has over 16,500 miles and stops smoothly. Two deer are grateful.

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